40CH DWDM MUX/DEMUX with 1310nm & Monitor Port – Enhancing Network Capacity and Visibility
Introduction: The Growing Demand for DWDM Solutions
The global Dense Wavelength Division Multiplexing (DWDM) market is experiencing rapid growth, valued at approximately US$13.87 billion in 2025 and projected to reach US$28.24 billion by 2034, at a CAGR of 8.30%. This expansion is primarily driven by increasing data traffic, the proliferation of cloud computing, big data analytics, and the ongoing rollout of 5G networks. As data center capacities are expected to double within the next five years, network operators and system integrators face a critical challenge: how to maximize the capacity of existing fiber infrastructure while maintaining operational visibility and reliability.
At Feiyi Optoelectronic, we understand these demands. Our 40CH DWDM MUX/DEMUX is engineered to address precisely these challenges — delivering high-density channel capacity, low insertion loss, and built-in monitoring capabilities, all in a passive, reliable platform.
Product Overview: 40CH DWDM MUX/DEMUX (C20–C59, with 1310nm and Monitor Port)
The 40CH DWDM MUX/DEMUX is designed in accordance with the ITU-T G.694.1 standard, featuring 100GHz (0.8nm) channel spacing. It covers 40 channels from C20 to C59 (1530.33nm to 1561.42nm), fully utilizing the C-band spectrum to maximize fiber capacity. The device employs AAWG (Athermal Arrayed Waveguide Grating) Gaussian technology, ensuring excellent optical performance without the need for external electrical power or temperature control. The AAWG Gaussian design achieves approximately 6dB of link budget savings for a pair of MUX/DEMUX compared to alternative filter-based solutions, while supporting a wider operating temperature range.
The 1U 19-inch rack-mountable form factor makes it ideal for space-constrained telecom shelters, data center colocation facilities, and central office environments. Weighing just 3.5kg and measuring 44 × 440 × 230 mm (H×W×D), the unit integrates seamlessly into standard network racks without demanding excessive power or cooling resources.
Key Technical Features
Dual-Fiber Point-to-Point Transmission
The device supports 40 channels of independent traffic over a pair of optical fibers (Tx and Rx directions). This dual-fiber configuration delivers full-duplex transmission for up to 40 distinct data streams. Each channel operates at any data rate protocol-transparently, from 1G to 100G and beyond, making it future-proof for network upgrades.
Low Insertion Loss
With insertion loss ≤3.5dB on DWDM wavelength ports and ≤0.8dB on the 1310nm port, the device ensures minimal signal degradation across the entire channel plan. This low-loss performance is critical for maintaining link budgets over long-distance transmission up to and beyond 100km when combined with DWDM amplifiers (EDFAs) and dispersion compensation modules (DCMs).
1310nm Legacy Port
The integrated 1310nm port passes wavelengths from 1260nm to 1360nm, with insertion loss ≤0.8dB. This dedicated port supports a wide range of legacy traffic types, including 1G LX/SX, 10G LR, 40G ER4/LR4, and 100G LR/ER4/LR4/ZR4 transceivers. Operators can seamlessly integrate existing 1310nm equipment into a new DWDM backbone without costly rip-and-replace upgrades, protecting previous infrastructure investments.
Monitor Port for Non-Invasive Troubleshooting
The 1% monitor port serves as a critical operations tool. With 1% tapping ratio and insertion loss ≤26dB, it allows network engineers to inspect optical power levels on the trunk line using an optical power meter or optical spectrum analyzer — all without disconnecting the main signal or affecting live traffic. This non-intrusive diagnostic capability is indispensable for proactive maintenance and rapid fault localization. For early fault detection and network stability, the monitor port is an essential element that reduces mean-time-to-repair (MTTR) and prevents unplanned service outages.
High Channel Isolation and Low PDL
Channel isolation ensures that signals on adjacent wavelengths do not interfere with each other. Our device delivers adjacent channel isolation ≥25dB and non-adjacent channel isolation ≥29dB, with directivity ≥40dB. Polarization Dependent Loss (PDL) is ≤0.5dB and Polarization Mode Dispersion (PMD) is ≤0.1ps, guaranteeing stable performance regardless of input signal polarization variations.
Full Environmental Compliance
The MUX/DEMUX operates reliably from -5℃ to 65℃ and can be stored from -40℃ to 85℃, making it suitable for both climate-controlled data centers and unregulated outdoor cabinets in regions with wide seasonal temperature swings.
Complete Specifications at a Glance
| Parameter | Specification |
|---|---|
| Wavelength | 40 channels, C20–C59 (1530.33nm–1561.42nm) |
| Channel Spacing | 100GHz (0.8nm) |
| Channel Passband | ±0.11nm |
| Technology | AAWG (Gaussian) |
| Insertion Loss (DWDM ports) | ≤3.5dB |
| Insertion Loss (1310nm port) | ≤0.8dB |
| Insertion Loss (1% Monitor port) | ≤26dB |
| Link Loss | ≤7dB |
| 1310nm Port Pass Band | 1260nm–1360nm |
| Center Wavelength Accuracy | ±0.05nm |
| Return Loss | ≥40dB |
| Directivity | ≥40dB |
| Polarization Mode Dispersion | ≤0.1ps |
| Polarization Dependent Loss | ≤0.5dB |
| Adjacent Channel Isolation | ≥25dB |
| Non-Adjacent Channel Isolation | ≥29dB |
| Operating Temperature | -5℃ to 65℃ |
| Storage Temperature | -40℃ to 85℃ |
| Net Weight | 3.5kg |
| Dimensions (H×W×D) | 44 × 440 × 230 mm |
Note: Specified with connectors.
Applications
The 40CH DWDM MUX/DEMUX is suitable for a wide range of industries and use cases:
- Broadcast and TV networks – Transporting multiple high-definition video streams over a single fiber pair
- Internet Data Centers (IDC) – Interconnecting server clusters across data center pods or between geographically separated data center campuses
- Financial services – Low-latency, high-availability connectivity for trading platforms and transaction systems
- Government networks – Secure, high-capacity backbones for municipal and national infrastructure
- Cloud service providers – Aggregating traffic from multiple tenants and services onto shared fiber infrastructure
- Massive data transmission – Research and education networks, scientific computing facilities, and content delivery networks
Deployment Example: Long-Haul Transmission
When paired with DWDM optical amplifiers (EDFAs) and dispersion compensation modules (DCMs), the 40CH MUX/DEMUX forms the foundation of a complete DWDM transport system capable of supporting long-distance transmission over hundreds of kilometers. The passive nature of the MUX/DEMUX means no electrical power is required at the multiplexing stage, reducing operational costs, power consumption (typically <1W per unit), and points of failure. Operators can simply deploy transceivers, connect to the appropriate channel port on the MUX at site A and the corresponding DEMUX port at site B, and achieve full 40×1G/10G/100G bidirectional connectivity within minutes.
Integration with Feiyi‘s Complete Optical Portfolio
Feiyi Optoelectronic does not just supply standalone passive modules — we support complete optical transport solutions. Our product portfolio includes:
- DWDM/CWDM MUX/DEMUX modules (various channel counts and grid spacings)
- Optical transceivers, including CWDM and DWDM SFP/SFP+
- EDFA optical amplifiers for long-haul reach extension
- Optical switches and protection modules
- Custom fiber optic patch cords and pigtails
All components are designed to work seamlessly together, reducing integration complexity and ensuring end-to-end system performance.
Customization: We Build the Solution Around You
Standard products are just the starting point. Feiyi excels in customizing solutions to match your exact network architecture, channel plan, and physical constraints.
- Channel count customization – from 8 to 48 channels or higher, in 100GHz or 50GHz grid spacing
- Wavelength range flexibility – C-band, L-band, or expanded coverage to meet specific ITU channel requirements
- Port configuration – Add/Drop ports, expansion ports (EXP), customized monitoring tap ratios, and optional optical add-drop multiplexer (OADM) functionality
- Fiber and connector options – Bare fiber, 900μm loose tube, LC/UPC, LC/APC, SC/UPC, SC/APC, or customer-specified
- Packaging – 1U rack mount, LGX cassette, ABS box, or mini-module for space-constrained integration
- Fiber length – Standard 1.5m (±0.1m) or any specified length per customer requirement
Whether you are designing a metro ring, a long-haul backbone, a data center interconnect, or a private enterprise network, Feiyi‘s engineering team is ready to tailor a solution that meets your exact budget, performance, and delivery timeline.
Why Choose Feiyi Optoelectronic?
Shenzhen Feiyi Optoelectronic Communication Co., Ltd. is a trusted manufacturer and supplier of high-quality fiber optic communication components. With over 11 years of innovation and manufacturing experience, a global team of 250+ employees, annual revenue exceeding US$7 million (2023), and more than 3,000m² of manufacturing area, we possess the production capacity, quality control systems, and technical expertise to support projects of any scale — from lab prototypes to volume production for carrier-grade deployments.
We adhere to rigorous quality standards, including ISO9001 certification, and perform comprehensive reliability testing across all products. Each module undergoes insertion loss, return loss, end-face inspection, interchangeability, vibration, tension, and temperature cycling tests prior to shipment, ensuring consistent performance from batch to batch.
Ordering Information
| Product No. | Product Description |
|---|---|
| DMD40-1U01-C2059-31M | DWDM MUX DEMUX 40CH (C20–C59) with 1310nm and Monitor Port, Dual fiber, LC/UPC, 1U Rack |
Conclusion
The 40CH DWDM MUX/DEMUX with 1310nm and Monitor Port represents a powerful, cost-effective solution for network expansion. By combining high channel density, low insertion loss, legacy traffic support, and built-in monitoring capabilities, this device empowers operators to scale their networks intelligently — without compromising on reliability or operational visibility.
From IDCs to broadcast networks, from financial institutions to cloud providers, Feiyi‘s DWDM solutions are enabling the next generation of high-speed optical connectivity.
Ready to deploy your next DWDM project?
Custom configurations are available based on your specific wavelength plan, fiber infrastructure, and application requirements. Contact us to discuss your project, request a datasheet, or order samples for testing.https://www.feiyi-oeo.com/contact/
